Lisa K Washburn1, K Bridget Brosnihan2, Mark C Chappell2, Debra I Diz2, TanYa M Gwathmey2, Patricia A Nixon3, Gregory B Russell4, Beverly M Snively4, T Michael O'Shea5. 1. Department of Pediatrics, Wake Forest School of Medicine, USA Hypertension and Vascular Research Center, Wake Forest School of Medicine, USA liwashbu@wakehealth.edu. 2. Hypertension and Vascular Research Center, Wake Forest School of Medicine, USA. 3. Department of Pediatrics, Wake Forest School of Medicine, USA Health and Exercise Science, Wake Forest School of Medicine, USA. 4. Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, USA. 5. Department of Pediatrics, Wake Forest School of Medicine, USA Hypertension and Vascular Research Center, Wake Forest School of Medicine, USA.
Abstract
HYPOTHESIS/ INTRODUCTION: Preeclampsia is associated with alterations in the maternal renin-angiotensin-aldosterone system (RAAS), increased blood pressure (BP), and cardiovascular risk in the offspring. We hypothesized that preeclampsia is associated with alterations in the RAAS in the offspring that persist into adolescence. MATERIALS AND METHODS: We compared components of the circulating (n = 111) and renal (n = 160) RAAS in adolescents born prematurely with very low birth weight (VLBW) of preeclamptic (PreE) and normotensive (NoHTN) pregnancies. Multivariable linear regression was used to evaluate potential confounding and intermediate variables. Analyses were stratified by sex. RESULTS: Adjusting for race and antenatal steroid exposure, male offspring of PreE mothers had higher circulating aldosterone than those of NoHTN mothers (adjusted mean difference = 109; 95% confidence limits: -9, 227 pmol/L). Further adjustment for current BMI attenuated this difference (adjusted mean difference: 93; 95% confidence limits: -30, 215 pmol/L). CONCLUSION: Among male preterm VLBW infants, maternal preeclampsia is associated with increased circulating aldosterone level in adolescence, which appears to be mediated in part by higher BMI.
HYPOTHESIS/ INTRODUCTION: Preeclampsia is associated with alterations in the maternal renin-angiotensin-aldosterone system (RAAS), increased blood pressure (BP), and cardiovascular risk in the offspring. We hypothesized that preeclampsia is associated with alterations in the RAAS in the offspring that persist into adolescence. MATERIALS AND METHODS: We compared components of the circulating (n = 111) and renal (n = 160) RAAS in adolescents born prematurely with very low birth weight (VLBW) of preeclamptic (PreE) and normotensive (NoHTN) pregnancies. Multivariable linear regression was used to evaluate potential confounding and intermediate variables. Analyses were stratified by sex. RESULTS: Adjusting for race and antenatal steroid exposure, male offspring of PreE mothers had higher circulating aldosterone than those of NoHTN mothers (adjusted mean difference = 109; 95% confidence limits: -9, 227 pmol/L). Further adjustment for current BMI attenuated this difference (adjusted mean difference: 93; 95% confidence limits: -30, 215 pmol/L). CONCLUSION: Among male preterm VLBW infants, maternal preeclampsia is associated with increased circulating aldosterone level in adolescence, which appears to be mediated in part by higher BMI.
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